Underdeterminant
子行列式
🗣️ 情景例句
You shouldn't have.
不该这样破费的。
We don't have any different opinions about the contractual obligations of both parties.
就合同双方要承担的义务方面，我们没有什么意见。
Because the Moon has only an eightieth of the Earth's mass,
因为月球的重量只有地球的1/8，